sundstrand



June 16, 1931. o. .1, sUNDsTRAND 1,810,737

CASH REGI STER Filed June 28, 1929 Patented June 16, 1931 UNITED STATES PATENT OFI-Ical OSCAR J'. SUNDSTBAND, 0F ROCKFORD, ILLINOIS, ASSIGNOR TO SUNDSTRAND CORPORA- TION, OIE` WILMINGTON, DELAWARE, A CORPORATION OF DELAWARE Y CASH REGISTER Application led J'une 28,

This invention relates to cash registers and, more particularly, although not exclusively, to cash registers of the type comprising a cash drawer upon which an adding and/or subtracting machine is removably positioned, means being provided whereby operation of the machine will cause unlatching of the cash drawer. Examples of such a machine are shown in my Patent No. 1,693,259, dated November 27, 1928, and in my application Serial No. 655,557, filed August 4, 1923 (now Patent No. 1,759,069, dated May 20, 1930).

The presentinvention relates to means for rendering the unlatching means effective under certain conditions, as, for example,

when the machine is properly adjusted to cause the production of a required record, as, for instance, a record or symbol of the clerk who operated the machine at the time the drawer was opened. A construction capable of functioning in this manner is disclosed in application Serial No. 655,557, said construction comprising mechanical elements which are operated by arms connected to the levers that raise and lower the type bars.

A particular object of the present invention is to produce a drawer-unlatching mechanism which shall be adapted for incorporation into adding and subtracting machines of the type shown in my application Serial No. 670,665, filed October 25, 1923, wherein there is no room for the mechanical elements and operating arms just alluded to.

Itr is frequently desirable to use the adding machine for calculations not` directly connected with sales and therefore not requiring use of the cash drawer. Hence the machine is often equipped with a paper carriage adapted to support two tapes, one of which is used for recording sales and other cash register operations, and the other of which is used for recording general calculations. The carriage is movable laterally to bring either tape into position to receive imprints. When the carriage is in position for general calculating work it is desirable that the means for unlatching the cash drawer be rendered inoperative so that the drawer shall remain closed at such times. One of the ob- 1929. Serial No. 374,596.

4jects of the present invention is to provide simple and reliable means for thus rendering the drawer-unlatching means ineiective.

In the accompanying drawings,

Figure 1 is a fragmental left-hand elevation of an adding and/or subtracting machine embodying the features of my invention.

Fig. 2 is a fragmental plan view of the rear portion of the machine.

Fig. 3 is a fragmental rear elevation of certain parts.

Figs. 4 and 5 are fragmental plan views.

The means for raising and lowering the type bars (the latter not being shown herein) comprises two sideV members 16, one of which is shown in Fig. l, these members being movable up and down in every cycle of operations of the machine. Said members 16 carry a transverse rod 15. The parts 15 and 16 are located at the rear end of the machine. Whenever the operator pulls the handle to operate the machine the said members 16 move downwardly.

Certain of the type bars are provided with special characters, as, for example, letters or numerals constituting the symbols for departments or clerks, the abbreviations for paid out, goods returned, charged to account, received on account, etc. The means for selectively limiting upward movement of these type bars to present the desired characters at the printing line comprises a plate 506 for each such type bar, said plates being mounted alongside the keyboard at the front end of the machine to slide back and forth longitudinally of the machine, as fully described in my application Serial No. 655,- 557 511 is a key yor handle attached to each plate 506.for` sliding the latter. Meansof any preferred character, as, for example, that fully disclosed in my application Serial No. 655,557 is provided to hold the plat-e or plates 506 in adjusted position.

The base 40 of the machine stands upon a cabinet (not shown) containing a cash drawer. The means for latching the cash drawer in closed position may be of any desired character, as, for example, that disclosed in'my Patent No. 1,560,300, dated January 5,

1926. It is suiicient here to state that the latch is arranged to be disengaged from the drawer by means including a plunger G16 which is vertically reciprocable in the cash drawer cabinet and in the base d0, the plunger extending through an opening (S18 located in the base ot the machine directly below the rod l5. The plunger (316 is arranged to be depressed by power derived 'from the rod l5, but in order that the plunger shall be depressed only when one or more of the plates 50 have been positioned for the making oi' a required record, I provide a member which arranged to be interposed between the rod l5 and the plunger 1G whenever such a record bein made, said rod depressing said nie1nber and the plunger 616 and thus causing Athe cash drawer to be unlatched.

In the present embodiment the member referred to coi .i sts oi a sheet metal member SOO having a flanged end 801 adapted to be interposed between the upper end of the plunger G16 and the transverse red 1 5 and thus transmitting downward motion from the rod to the plunger. The member is pivoted to an arm 802 by means oiE headed screw 863 socured to said member and extendi slidably through the arm 802. Adjacent to the screw 803 the member 800 has an upwardly bent end 804 which bears against a plate 805 itorming a part of the framework of the machine. An expansive spring 806 interposed between the hea d oi the screw and the plate 805 yieldingly holds the member SOO in normal position. The screw 803 entends through an opening 807 in the plate 805, said openi .3* being elongated transversely et the machine. To prevent horizontal displacement of the member SOO the latter is provided with a pin SOS which extends through a transvers elongated openiiig 809 in the plate S05.

Rigid with the arm 802 is an arm 810. A contractile spring 811 is anchored at one end to the plate 805 and is connected at its other end to the arm 810, said spring tending to move the member 800 in the direction to interpose the part 801 between the rod 15 and the plunger G16. neeted by means oi link 812 to an arm 813 pivoted alongside the slide or slides 50G on the axis 814-. J@is shown in Fig. l, the front end of the link 812 is bent to provide a loop 815 to receive a screw or stud 816 on the arm S13. Said screw is slidable within the loop. On the arm 813 is an angular lug 817 which lies in the path of forward movement oi the slide or slides 506. A. contractile spring 81S anchored at one end in the frame work of the machine at 819 is connected at its other end to the arm 813 and tends to swing said arm rearwardly, but is restrained by the slide or slides 506 when the latter occupy their initial or forward positions.

lVhen all of the slides 506 have been slid rearwardly into position to ei'lect the printing The arm 81.0 is con-.

of a required record, the spring 818 draws the arm 813 rearwardly, thus permitting the spring S11 to turn the lever 802-810 in the direction to insert the part S01 in the space between the rod l5 and the plunger G16. Operation of the machine to perform a` cycle of' operations will then cause the rod l5 to press the part S01 downwardly, said member swinging on the fulcrum SOLL. the plunger 616 being thus depressed to unlatch the cash drawer. It will be seen that such unlatching o1 the drawer can occur only when the slide or slides 506 have been adjusted for the making ot the desired record.

The platen (not shown) which may be assinned to be long enough to support two tapes, one for adding machine work and the other for gene `al calculations, is mounted in a carriage A.. ln order that the drawer-unlatching means shall be under the control of the paper carriage I attach to the latter a cam 820. Said cam is of such length and so low cated that when the carriare is in position for general computations the cam engages a roller 821 on the upper end of a lever 822 pivoted at in the machine frame. The lower end ot the lever 822 is forked to embrace the arm 810.

l/Vhen the carriage is in position for cash register work, the caml S20 is remote from the roller 821, but when the carriage is in position for general computations the cam 820 engagesfthe roller 821 as shown in Fi gs. 2 and 4land thus prevents the spring 811 from interposing the member 801. between the rod 15 and the plunger G16. Therefore, during operation of the machine to performgeneral calculations tie cash drawer remains closed.

I claim as my invention:

l. The combination of a computing machine having in its extreme rear portion av part movable up and down in each cycle of operations ot' the machine, a drawer-unlatching' plunger below said part, an element adapted to be interposed between said part and said plunger to transmit movement from said part to said plunger, said element being movable transversely of the machine, a spring tending to interpose said element, settable means to control printing, said means being` located at the front end of the machine. and conneeti ons between said means and said springfor restraining the spring when said settable means is in its initial position, said connections including a link extending along the side of the machine.

2. The combination of a com uting machine, a drawer-unlatching mem er, spring actuated means tending to render the machine effective to operate said member, a manually movable slide to control printing, and connections between the slide and said spring-actuated means to restrain said means when said slide is in its initial position.

3. The combination of an adding and printing machine having in its extreme rear portion a part movable up and down in each cycle of operation of the machine, a drawerunlatching plunger below said part, an element adapted to be interposed between said part and said plunger to transmit movement from said part to said plunger, a laterally movable paper carriage, a cam on said carriage, a lever pivoted in the rear portion of the machine frame, the upper end of said lever being arranged for engagement by said cam and the lower end of said lever being connected to said element, and a spring normally holding said roller in the path of said cam and also tending to interpose said element.

4. The combination of an adding and y printing machine having a part reciprocable in each cycle of operations of the machine, a drawer-unlatching device, an element adapted to be interposed between said part and said device to transmit movement from said part to said device, a laterally movable paper carriage, a cam on said carriage, a lever pivoted in the machine frame, the upper end of said lever being arranged for engagement by said cam and the lower end of said lever being connected to said element, and a spring normally holding said roller in the path of said cam and also tending to interpose said element. 5. The combination of a computing machine, a drawer-unlatching member, springactuated means tending to render the machine efective to operate said member, a lever pivoted near the front end of the machine, a link connecting said lever to said spring-actuated means, and a manually movable member to control printing, said member being arranged when in its initial position to hold said lever in position to restrain said springactuated means.

In testimony whereof, I have hereunto affixed my signature.

OSCAR J. SUNDSTRAND. 

